Centrifugal governor-switch.



L. SOHAEFFER.

OENTRIFUGAL GOVERNOR SWITCH.

APPLICATION FILED MAYQ, 1912.

1, 1 22,543, Patented Dec. 29, 1914.

v GHOIHCIJA D EES: Primaries LUTHER SGHAEEFER, OF CHICAGO, ILLINOIS,ASSEGNOB T HENRY E. PETE"? AND JOHN MGFEELY, BOTH 0F INDIANAPOLIS,INDIANA, AND MILTON E. BETTY, 0F CHZCAGQ,

ELLINDIS.

CENTRIFUG-AL GOVERNOR-Sl/VITCE menace;

Specification of Letters Eatent.

Patented Dec. 29, 191%..

Application filed May 9, 1912. Serial No. 696,210.

To all whom it may concern.

Be it known that l, LUTHER Sonanrrnn, a citizen of the United States,residing at Chicago, in the county of Cook, State of lllinois, haveinvented certain new and useful Improvements in Centrifugal Governor-Switches; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will onable others skilledin the art to which it appertains to make and use the same.

This invention relates to certain novel and useful improvements incentrifugal governor switches, and has particular application to adevice of the class described adapted especially for employment inconnection with moving picture machines, although i wish it to beunderstood that the invention is not limited in its useful applicationto this particular purpose.

in carrying out my invention, it is my purpose to provide a simple,reliable and efficient centrifugal governor switch which may be readilyapplied in operative position, which is positive in its operation andwhich may be manufactured and marketed at a relatively low cost.

With the above recited objects and others of a similar nature in view,my invention consists in the construction, combination and arrangementof parts set forth in and falling within the scope of the appendedclaims.

in the accompanying drawings, like char.- acters of reference indicatelike parts throughout and Figure 1 is an end view of a device embodyingmy invention. Fig. 2 is a longitudinal sectional view takentherethrough, the governor being shown as applied to a rotating shaft.

The centrifugal governor switch embodying my invention will be foundparticularly adapted for use in connection with a moving picture machineapparatus such as is shown and described in the patent to John l/lcFeely, dated January 20, 1914, and numbered 1,084,851.

Referring now to the accompanying drawings in detail, the numeral 5indicates a rotatable shaft upon which is mounted my improved switchwhich I will now proceed to describe in detail. This switch itselfcomprises a pair of metallic disks 88, the disk 8 having a centralopening 9 therein.

The central portion of the disk 8 carries a block or bushing 9 ofinsulating material into which the end of the shaft 5 extends so thatwhile the governor switch is securely fastened in the shaft 5, thegrounding of the electric circuit is avoided. The disks are suitablyspaced apart and are connected together at intervals by the transverselyex tending sleeves 10 through which sleeves pass the shanks of the screwpins 11. Each sleeve pivotally or swingingly supports a contact member12, which is in the nature of a short cylindrical metallic block, eachblock being bored longitudinally and eccentricallv as at 13 for thepassage of its supporting sleeve. lhe sleeve is preferably made a littlelonger than its contact member so that the latter will not bind at itsend against the adjacent faces of the disks but will swing loosely andfreel The numeral 1.4 designates a metallic core which is inserted inthe opening or aperture of the outside disk 8, said aperture beingsufficiently large to avoid contact with the core and consequently anyelectrical connection. The core is fastened to a plate of insulatingmaterial 15, said plate carrying a contact strip 16 through which passthe binding screws 1? which connect the strip and the core. The numeral18 designates an electrical connection secured to the strip '16 by thebinding screw or post 19, said connection forming a terminal theconducting wire 20. Un the same side of plate as the core, is contactarm adapted to bear against the adjacent face of the disk, said armbeing connected by binding screws 22 and 23 with the meta o contactwhich forms a terminal for ad of the conducting wire 25.

From the description given it will be seen that as shaft rotate atticgovernor switch will turn with the shaft so that the swin blocks 1 willmove by centrifugal force outward away from. the core 1%. Upon stoppageof the shaft, the uppermost contact block 12 will drop down into contactwith the core. As the spring contact arm bears against the disk 8 at theoutside of the governor switch, the current flowing through theconductor 25 will naturally pass through said arm and disk to the blocks12 and thence to the core 1 and through the same to the contact 18 andconductor 20, when the governor switch is at rest.

While I have herein shown and described one particular embodiment of myinvention, '1 wish it to be understood that I do not confine myself toall the precise details of construction herein set forth by way ofillustration, as modification and variation may be made withoutdeparting from the spirit of the invention orexceeding the scope of theappended claims.

What I claim is:

1. The combination with a shaft, of a plurality of spaced membersrotating with the shaft, a core arranged within the space between saidmembers and out of electrical contact with such members, swingingcontacts mounted upon the spaced members and adapted to swing bycentrifugal action out of contact with the core and by gravity into Iwith one of the spaced contact with the same, the core forming oneterminal of an electric circuit, and the other terminal of said circuitin electrical contact members. I 2. The combination with a shaft, of acircuit closer comprising a plurality of substantially parallel spacedmembers rotating with the shaft, a core arranged in substantialalinement with the shaft within the space between the spaced members andout of electrical contact with such members, swinging contacts mountedupon the spaced members andadapted to swing by centrifugal action out ofcontact with, the core and bygravity into contact with the same, thecore forming one terminal of an electric circuit, and the other terminalfor said circuit in electrical contact with one of the spaced members.

3. The combination with a shaft, of a member rotating with the shaft, acore extending through the member but out of electrical contacttherewith, a plurality of swinging contacts eccentrically mountedon therotating member and adapted to swing by centrifugal action out ofcontact, with the core and by gravity into contact with the same, aterminal for an electric circuit in electrical connection with the core,and a second terminal for said circuit in electrical contact with therotating member.

4. The combination with a shaft, of a circuit closer rotating with theshaft and comprising two spaced disk members, contact members pivotallysupported between the disk members, a'core extending between 'the diskmembers and held out of electrical contact with such disk members, acontact member connected to the core and to one of the wires of anelectric circuit, and a contact member bearing against one of the disksand connected with a second wire of the electric circuit.

5.v The combination with a shaft, of a disk connected with the shaft butinsulated therefrom, a second disk arranged substantially paralleltherewith, but spaced apart from the first mentioned disk, said seconddisk having a central opening therein, a core projecting through saidcentral opening into the space between the two disks, said core beingheld out of electrical contact with the disks, a plurality of swingingcontacts supported by the disks and located between the latter, saidcontacts being adapted to swing by centrifugal action out of contactwith the core and by gravity into contact with such core, a contactmember connected to the core and to one of the wires of an electriccircuit, and a contact memher bearing against the second disk and con-'nected to a second wire of the circuit.

6. The combination with a rotating shaft, of a circuit closer carried bythe shaft and comprising a conducting body, a plurality of swingingcontact members supported by the conducting body and adapted to swingoutward when the shaft is turned, a conducting element against whichcertain of the swinging contacts will bear when the shaft is at rest,said conducting element being held out of electrical contact with theconducting body a contact arm bearing against the conducting body. andconnected to one of the wires of an electric circuit,

and a contact connected with another wire ofthe electric circuit andelectrically connected to the conducting element aforesaid.

. In testimony whereof, I affix my signature, in presence of twowitnesses.

LUTHER SGHAEFFER.

Witnesses:

DOROTHY COHEN, T. J. DYKE.

